Combined drill and grinding machine



July 8, 1924.

W., A. SPEEGLE COMBINED DRILL AND GRINDING MACHINE Filed June 6, 7922 4Sheets-Sheet l ATTORNEY July 8 1924.

w. A. SPEEGLE COMBINED DRILL AND GRINDING MACHINE Filed June 6, 192? 4Sheets-Sheet 2 INVENTOR ATTORN EY WITNESS;

W. A. SPEEGLE COMBINED DRILL AND GRINDING MACHINE Filed June 6. 1922 4Sheets-Sheet 5 7/434. 6 72 eqyZe,

E55 ATTORN EY W lTN July 8,1924. y 1,500,963

W. A. SPEEGLE COMBINED DRILL AND GRINDING MACHINE Filed June 6, 1922 4Sheets-Sheet 4 3 9 ge l I Q .NVENTOR ATTORNEY WITNESS:

Patented July 8, 1924;

U N l WILLIAM A. SPEEGLE,

OF MORGANTON, No-aracARoLmA, nssren'on or'ona menmn TO WALTER E.W'ILSO'N, OF MORGANTOWN; NORTH CAROLINA.

COMBINED DRILL. AND GRINDING MACHINE.

Application filed June 6, 1922. Serial No. 566,255.

Toiall whom it may concern:

Be it knownthat 1, W1LLIAM A. srmm,

a citizen of the United States, residing. at Morganton in the county.of, Burke. and State of North Carolina,- have inventednew andusefullmprovementsin Combined Drill and: Grinding Machines, of. whichthe followingis aspecification. a This invention relates to acombination 1 drilling 'andgrinding'machine, the general object of theinvention being to provide -a support in which is vertically movable atable which carries a motor and its shafting and gears and whichhas adepending arm in which is sup-ported the driven shaft which is'toreceive the tools and which is driven from the motor.

. Another object of the invention is to pro vide means whereby. thetable can-be ad 0 justedin the support either by the motor or byhand. af Q Another object of the invention is to provide meansffor rotating thetool and at the same time causing the tool totravel about a circularpath, thus making .the device ca.- pable of operating'on the interiors:of cylindrical members r YThe" invention also consists in certain othenfeatures of construction and. in the combination and arrangement o'f'theseveral parts, to. be hereinafter". fully described, illustrated in theaccompanying drawings and specifically pointed outin the appendedclaims. yIn describing my invention in detail, reference will be had tothe accompanying drawingswherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is an elevation of the lnventlon withparts broken away.

Figure 2 is a front view thereof;

;Fig ,uref 3 is asection on line 3-3 of Figure 1.

Figure 4 is an enlarged detail view of the reversing mechanism forthefeed screw. Fig1-1I'e5 is a longitudinal sectional view through. thetool carrying arm and its associatedfparts. 1 2 Figure 6 is a section online 6' 6 of Fig:

ure 1. Y 7

Figure 7 is a bottom plan view of the bearing block andits supporting.frame.

Figure 8 isa sect-ion 'o'n. line 8.-8*0f Figare 1. f

In these views 1 indicates a base having."

a rear raised extension 1? on which the member 2 is slidably supportedand 3 indicates a hollow upright which is slidably mounted on the,member 2 and connected therewith by a dove tailedjoint as shownat 3Thus the upright ma be adjusted in two directionsat rightangles toeachother.: ,The up:

"right .isprovided' with guideways for. the

platform iowhich is vertically movable in thelupright. This platformcarries the mo tor 5 and theshafts-andfgearing hereinafter, referred to.A depending arnrfi is. connected with thefront endof the platform and ahollow shaft? is journaled in this aim The upper 'endof this shaft has.se-

cured thereto a. worm gear 8 and the lower end thereof has securedthereto a frame 9 in which is slidably mounted a block 10. A spring .11.tends tohold theblock at one end of. the frame and the block is adjustedin the frame against the spring by means of the set bolt 12. An arbor13. is eccentrically mounted-inthe block, this arbor carrying an emery:wheel. 14; or another tool. A vertical sha'ftlfi extends into the hollowshaft 7. and the lower end of this shaft is connected by a small shaft16,w ith the;arbor 13, thisshaft 16 v heing provided with universal,joints 17. Abeve'led gear 1 8. is connected with the shaft. 15 and apulley l9 is also connected with said shaft. The motor shaft 2O- hasslidably mounted on its outer end a beveled gear21 which is adapted toen age with-the gear 18. This. gear 21 isadapted to .be moved into. andout of engagementwiththe gear 18 by means of the handle 22. A pulley 23is secured to the motor shaft 20 and a belt 24. passes over thepulleys23 and 19. Suitable guiding pulleys 25 are also provided for the belt.It willthusbe seen that the tool carryin arbor can be rotated throughmeansfof t re bevel gears or by means, of. the. belt and pulleys. henthe parts are to be driven fromthetbelt thebevel gears are disengaged,as will be understood. The motor shaft20 also carries a pinion. 26

which meshes with a pinion 27 on a shaft he shaft 28 having the gear 33mesh directly with the secured to the screw shaft 35 which isjournaledin the upright and is so connected with the platform that whenthe shaft is moved longitudinally by its engagement with the nut 36 theplatform will also be moved vertically in the upright. Instead of gear34 I may so adjust the worm gear 31 and'the {worm as to space thegears33 and'i34 fapartto permit a reversing imechanism' to be used .tocausethe platform to be movedfup and-down'in the upright. Such reversingmeans} consists of a. member 37 which is pivotedlonthe shaft 32' andwhich canteen pair: of intermeshing gears 38.

The "member also; carries a pair of arms39 and a spring carrying pinwhich' is adapted to'be connected with a part of the plat form 1 The'partsa'reso arranged that in one positionof the member one gear38 willbe engaging the gear 33 and the other gear 38 will'be engaging the gear34 so that the gear 34 will be. rotating in the same'direc tionasthegear 33. In anotherposition of the parts, however, the small 'gear38' will be out of engagement with both the gears 33 and34 and onlythe-large gear 38 will be meshing with said gears. Then the gears 33 and34will be rotating in opposite direc tions The spring-and pin 40 willhold the memberjin either one' of its two positions after the member hasbeen [moved to this position." Themember is moved by the adjustable.stops'41'on the upright which are proivid edwith the springs 42 whichare en-' of'thearms' 39 withfthe the stops 41.

gaged "by the arms '39. These springs" 42 help the spring on pin '40 tocomplete the movementbf the member 37 after it is moved to a certainextent by the engagement inclined parts of j j By this meansthe'platform will' be moved downwardly by the gears and shaftsconnect'ing the motor; with the feed screw until one of the arms 39strikes the lowersto 41when the reversing device or member 3 .willbeswung into its other position so as to reversethe movement of the feedscrewand then theplatform will be moved upwardly until the other stop.is engaged by the arm 39 when'the parts will'be again reversed and theplatform fed down wardly, Thus the' plat form is reciprocated verticallyandby adjusting the stops the extent' of this movement can be varied;The rotation of hollow shaft Twill mo ve the tool 14in a circular pathat ,the' same time that thetool is revolving'around its axis by theberotating in a circular path but it will also be moving up and down.

I make the nut 36 in two parts, as shown at 36, so that said parts canbe separated by the handles 36" to disengage the nut from the shaft topermit the platform to remain stationary. Each part of the nut ispivoted to a support 36 which is connected with the upright.

The platform is counter balanced by the weights 43 which are connectedwith the platform by the cables .44, said cablespass ing'over pulleys45. v j I may" also provide manually operated means for raising theplatform, such means consisting o'f a rack 46 placed on theupright,'which is engaged by: a toothed wheel 47 placed on a shaft '48carried by the platform and whichis rotated by a handle 49.

I'also provide a work supporting table detachably, connected with asupport 5 2 which is vertically adjustable on the upright by. means ofthe rack 53 and the toothed wheel'5 4 which is carried by 'a. shaft 55which is j ournaled in the support and which is provided with a handle56'; c

By: having the arbor connected with the motor shaft byrthe bevel gearsand the belt and pulleys, the said arbor and the tool car ried therebycan be driven at different speedsrwithout changing the speed of themotor. Thus when the device is to be used for grinding and an emerywheel is placed on. theiarbor the parts should be driven. at greatspeed'and thus the belt and pulleys are made use of, the bevel gearsbeing disengaged. j,VVhen the device is to be used for [drillingpurposesand a'drill is attached to It isthought from the foregoing descrip tionthatthe advantages and novel features of my invention will be readilyapparent.

I desire it to" be understood that I may make changes in theconstructionand in the combination "and V arrangement of the. several parts,provided that such changes 1 fall within thescope of the appendedclaims. "IVhat Iolaim is: t

1. A device of the class described comprising an upright, a platformmovable therein, a feed screw connected with the nuticarried by theupright engagingthe screw, "a; motoron the platform, a tool. carryingmember actuated by the motor, means actuated'bythe motor for rotatingthe feed screw, reversing. means associated with such means for turningthe feed screw in either direction and adjustable stop means forplatform, a V

automatically actuating the reversing means to cause the platform to bereciprocated in the upright.

2. A device of the class described comprising an upright, a platformmovable therein, a motor carried by the platform, a tool carryingmember, means actuated by the motor for moving the same in a circularpath While it is being rotated, a feed screw- 10 carried by theplatform, a sectional nut carried by the upright for engaging the feedscrew, means for moving the sections apart to free them from the screw,means for driving the feed screw from the motor, reversing means for thescrew and adjustable and automatic means for actuating the reversingmeans to cause the same to reciprocate the platform.

In testimony whereof I affix my signature.

WILLIAM A. SPEEGLE.

